Oral care implement and oral care element

Abstract

The present disclosure relates to an oral care appliance and an oral care element, the oral care appliance comprising a handle and an oral care element, the oral care element comprising a brushing handle, a bristle piece and a weight, the brushing handle having a connecting end and a cleaning head, the connecting end and the cleaning head being located at opposite ends of the brushing handle, the brushing handle having a first flow passage, and the first flow passage forming a second inlet at the connecting end and a second outlet at the cleaning head; the bristle piece being arranged at an end of the cleaning head along a preset angle with the output axis extension direction, the bristle piece being provided with a contact element and a water outlet end; the weight being clamped between the cleaning head and the bristle piece, the weight being provided with a second flow passage, and the fluid being sprayed out from the water outlet end through the first flow passage and the second flow passage. The technical solution provided by the present disclosure can ensure the reliability and the aesthetic degree of the oral care element while increasing the weight.

Description

Technical Field

[0001] This disclosure relates to the technical field of oral hygiene, and particularly to an oral care appliance and oral care element. Background Technology

[0002] To prevent the brush head from being too light and causing the motor to operate at a low load, thus increasing energy consumption, a counterweight is usually added to the brush head to match the optimal load range of the motor.

[0003] In related technologies, a metal ring is added to the bottom of the brush head through an assembly process to increase counterweight. However, the metal ring, which serves as the counterweight, is located on the outer surface of the brush head, affecting its appearance and making it prone to falling off. Utility Model Content

[0004] The purpose of this disclosure is to provide an oral care appliance and oral care element that can increase the weight while ensuring the reliability and aesthetics of the oral care element.

[0005] According to one aspect of this disclosure, an oral care appliance is provided, the oral care appliance comprising a grip and an oral care element, wherein the grip includes a housing for gripping and a drive assembly disposed inside the housing, the drive assembly having a drive body and a power output shaft, the drive body having an output axis extending along a power output direction, the power output shaft extending along the output axis and penetrating the drive body, the power output shaft having an axial channel extending along the output axis and a first inlet and a first outlet communicating with the axial channel; the oral care element includes a flushing handle, a bristle attachment, and a counterweight, wherein the flushing handle has a connecting end and a cleaning head, the connecting end and the cleaning head being located within the flushing... At opposite ends of the handle extending along the output axis, the flushing handle has a first flow channel, and the first flow channel forms a second inlet at the connecting end, the second inlet communicating with the first outlet, and the first flow channel forming a second outlet at the cleaning head; the bristle implant is disposed at one end of the cleaning head at a preset angle to the output axis, the bristle implant is provided with a contact element and a water outlet end, and the contact element extends from the side of the bristle implant away from the cleaning head; the counterweight is at least partially sandwiched between the cleaning head and the bristle implant, the counterweight is provided with a second flow channel, and fluid from the axial channel is sprayed out from the water outlet end through the first flow channel and the second flow channel.

[0006] The technical solution disclosed herein increases the weight of the oral care element by clamping a counterweight between the cleaning head and the bristle implant. This allows for matching the optimal load range of the drive component, reducing its energy consumption, and enhancing the vibration or rotational force of the oral care element. It also concentrates the vibrational energy of the oral care element in the area of ​​the contact element, increasing the amplitude and enabling the contact element to more effectively clean tooth surfaces and crevices, thus improving cleaning efficiency. Furthermore, the counterweight is internal to the oral care element, preventing it from being exposed and maintaining the overall integrity and aesthetics of the oral care element, avoiding the visual abruptness of external metal rings in related technologies. It also prevents the counterweight from falling off, improving the product's durability and reliability, and reducing the possibility of dirt accumulating in the gap between the counterweight and the brush head, meeting the high hygiene standards for oral cleaning products.

[0007] Furthermore, by setting a second flow channel in the counterweight block, the fluid flows through the counterweight block. In this way, the counterweight block does not need to avoid the flow channel connecting the second inlet and the outlet. As a result, the counterweight block can fill the cleaning head as much as possible, or in other words, the cleaning head can have a large space to accommodate a large counterweight block to meet the counterweight requirements and improve the cleaning effect and vibration stability.

[0008] According to another aspect of this disclosure, an oral care appliance is provided, the oral care appliance comprising a grip portion and an oral care element, wherein the grip portion includes a housing for gripping and a drive assembly disposed inside the housing, the drive assembly having a drive body and a power output shaft, the drive body having an output axis extending along a power output direction, the power output shaft extending along the output axis and penetrating the drive body, the power output shaft having an axial channel extending along the output axis and a first inlet and a first outlet communicating with the axial channel; the oral care element comprising a flushing body and a counterweight, wherein a second inlet is provided at one end of the flushing body extending along the output axis, the second inlet being for communicating with the first inlet, and a contact element and a second outlet communicating with the second inlet are provided at the other end of the flushing body extending along the output axis; the counterweight is disposed inside the other end of the flushing body extending along the output axis.

[0009] According to another aspect of this disclosure, an oral care element is provided, the oral care element comprising a brush handle, a bristle implant, and a counterweight, wherein the brush handle extends along a main extension line, the brush handle has a connecting end and a cleaning head, the connecting end and the cleaning head are located at opposite ends of the brush handle along the main extension line, the brush handle has a first flow channel, and the first flow channel forms a second inlet at the connecting end, and forms a second outlet at the cleaning head; the bristle implant is disposed at a predetermined angle at one end of the cleaning head extending along the main extension line, the bristle implant has a contact element and a water outlet end, and the contact element extends from the side of the bristle implant away from the cleaning head; the counterweight is at least partially sandwiched between the cleaning head and the bristle implant, the counterweight has a second flow channel, and fluid from the second inlet is sequentially ejected from the water outlet end through the first flow channel, the second outlet, and the second flow channel. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 A schematic diagram of the structure of an oral cleaning appliance according to an embodiment of the present disclosure is shown;

[0012] Figure 2 A half-sectional schematic diagram of an oral care element according to an embodiment of the present disclosure is shown;

[0013] Figure 3 A half-sectional schematic diagram of a flushing handle according to an embodiment of the present disclosure is shown;

[0014] Figure 4 An exploded view of an oral care element according to an embodiment of the present disclosure is shown;

[0015] Figure 5 A half-sectional schematic diagram of a counterweight block according to an embodiment of the present disclosure is shown;

[0016] Figure 6 It shows Figure 5 Enlarged schematic diagram of part A;

[0017] Figure 7 A schematic diagram of a first angle of a counterweight according to an embodiment of the present disclosure is shown;

[0018] Figure 8A schematic diagram of a second angle of a counterweight according to an embodiment of the present disclosure is shown;

[0019] Figure 9 A first angle schematic diagram of an oral care element according to an embodiment of the present disclosure is shown;

[0020] Figure 10 A second-angle schematic diagram of an oral care element according to an embodiment of the present disclosure is shown.

[0021] Explanation of reference numerals in the attached figures:

[0022] 100. Grip part; 110. Housing; 120. Drive assembly; 121. Drive body; 122. Power output shaft; 1221. Axial channel; 1222. First inlet; 1223. First outlet; 123. Output shaft; 130. Liquid storage chamber; 140. Pump body; 150. Energy element;

[0023] 200. Oral care component; 210. Flushing handle; 211. Connecting end; 212. Cleaning head; 2121. Bottom wall; 2122. Side wall; 213. First flow channel; 214. Second inlet; 215. Second outlet; 216. Connector; 220. Embossing component; 221. Water outlet; 230. Counterweight; 231. Second flow channel; 2311. First flow channel section; 2312. Second flow channel section; 2313. Transition section; 232. Protrusion; 233. Through hole; 234. Connecting hole; 235. Stepped groove; 240. Contact element; 250. Soft rubber part; 251. Relief notch;

[0024] L1, output axis; L2, main extension line; α, preset tilt angle. Detailed Implementation

[0025] To avoid excessive energy consumption due to a light brush head causing low motor load, a counterweight is typically added to the brush head to match the motor's optimal load range. One approach is to increase the counterweight by thickening the brush head. However, limited by the size of the user's mouth, the space for thickening the brush head is limited, resulting in an unsatisfactory counterweight effect. Another approach is to add a metal ring at the bottom of the brush head through an assembly process. However, this approach has the following problems: the metal ring is located on the outer surface of the brush head, affecting appearance and making it prone to detachment; there is an assembly gap between the metal ring and the brush head body, which can easily trap dirt and grime after prolonged use, affecting hygiene; furthermore, the metal ring vibrates during brush head vibration, causing additional power loss and noise, impacting the user experience.

[0026] To address this, the present disclosure attempted to place the counterweight inside the brush head. However, for brush heads with integrated rinsing function, which have internal flow channels, the counterweight is prone to interfering with the flow channels, affecting normal water flow transmission.

[0027] Based on this, this disclosure retains the principle of placing the counterweight inside the brush head, but positions the counterweight to avoid the flow channels within the brush head. This method avoids exposing the counterweight, maintaining the integrity and aesthetics of the brush head's appearance, and avoiding the visual abruptness caused by an external metal ring; it is also less likely to fall off, improving the product's durability and reliability, and preventing loosening or detachment of the external metal ring due to assembly gaps; furthermore, it reduces the possibility of dirt accumulating between the counterweight and the brush head body, meeting the high hygiene standards of oral cleaning products.

[0028] However, considering that there is still an assembly gap between the counterweight and the brush head body, the counterweight will shake relative to the brush head body during the vibration of the brush head, resulting in noise and power loss. This disclosure further integrates the counterweight and the brush head body into one piece through a mold molding process, so that the counterweight and the brush head body are tightly combined, avoiding relative shaking, thereby reducing additional power loss and noise, and improving the user experience.

[0029] Meanwhile, considering the small overall size of the brush head, when the counterweight is positioned to avoid the flow channel, for example, when counterweights are placed on both sides of the flow channel, the remaining space on both sides of the flow channel is narrow and cannot accommodate excessively large counterweights. This results in counterweights that are too small and often fail to meet the weight requirements. Furthermore, if the receiving grooves for accommodating the counterweights are provided on both sides of the flow channel, and the wall thickness between the receiving grooves and the flow channel is too thin, it can easily affect the sealing performance of the flow channel. Therefore, this disclosure goes a step further by also providing a flow channel on the counterweight, making the counterweight's flow channel an integral part of the overall brush head flow channel. In this way, the counterweight does not need to avoid the flow channel, allowing it to cover as much of the brush head as possible to meet the weight requirements and prevent the thin wall thickness of the flow channel from affecting the sealing performance.

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this disclosure, but not all embodiments.

[0031] like Figure 1As shown, this disclosure provides an oral care appliance. The oral care appliance may include a grip portion 100 and an oral care element 200. The grip portion 100 may include a housing 110 and a drive assembly 120. The housing 110 is configured to be gripped, and the drive assembly 120 is disposed inside the housing 110. The drive assembly 120 provides power to the oral care element 200. The drive assembly 120 has a drive body 121 and a power output shaft 122. The drive body 121 has an output axis L1 extending along the power output direction. The power output shaft 122 is a columnar body extending along the output axis L1 and penetrating the drive body 121. The power output shaft 122 is configured to cooperate with the drive body 121 and transmit the output power of the drive body 121. For example, the drive assembly 120 may be a motor; correspondingly, the drive body 121 is a motor body, and the power output shaft 122 is a motor shaft. The power output shaft 122 has an axial channel 1221 extending along the output axis L1, and a first inlet 1222 and a first outlet 1223 communicating with the axial channel 1221. The first inlet 1222 is used to allow fluid from the incoming flow side to flow in. It should be noted that the feature extending along the output axis L1 or in the direction of the output axis L1 may include a case where the axis or centerline of the feature coincides with the output axis L1, or a case where the axis or centerline of the feature is perpendicular to the output axis L1. Taking the axial channel 1221 extending along the output axis L1 as an example, the axis of the axial channel 1221 is parallel to or coincides with the output axis L1.

[0032] Optionally, the fluid on the inflow side can be fluid located within the housing 110. For example, the grip 100 further includes a reservoir 130, a pump body 140, and an energy element 150. The reservoir 130, pump body 140, and energy element 150 are located inside the housing 110. The reservoir 130 communicates with the first inlet 1222, and the pump body 140 is connected in series in the pipeline communicating between the reservoir 130 and the first inlet 1222. The energy element 150 provides energy to the pump body 140 and the drive assembly 120. The pump body 140 is used to draw fluid from the reservoir 130 and supply it to the first inlet 1222. For example, the energy element 150 can be a battery, which provides electrical energy to the pump body 140 and the drive assembly 120. Alternatively, the fluid on the inflow side can be fluid located outside the housing 110. For example, the oral care appliance also includes a liquid supply base station, which communicates with the first inlet 1222 via a pipeline, thereby supplying fluid to the first inlet 1222 through the liquid supply base station.

[0033] like Figures 1 to 3As shown, the oral care element 200 can be understood as a brush head that simultaneously performs rinsing and brushing functions. The oral care element 200 is detachably coupled to the power output shaft 122 of the grip 100, allowing it to receive power from the power output shaft 122 to perform a brushing operation and to receive fluid from the first outlet 1223 to perform a water flow impact. Specifically, the oral care element 200 may include a rinsing body and a counterweight 230. The rinsing body extends along the output axis L1, and one end of the rinsing body along the output axis L1 has a second inlet 214. When the oral care element 200 is coupled to the power output shaft 122, the second inlet 214 communicates with the first outlet 1223. The other end of the rinsing body along the output axis L1 has a contact element 240 and a second outlet 215 communicating with the second inlet 214. The counterweight 230 is disposed inside the other end of the rinsing body along the output axis L1. For example, the contact element 240 may be a brush bristle or other cleaning component for contact with the mouth.

[0034] In this way, it is equivalent to setting a counterweight at one end of the flushing body near the contact element 240, which can match the optimal load range of the drive assembly 120, reduce the energy consumption of the drive assembly 120, and also enhance the vibration or rotation force of the oral care element 200, and concentrate the vibration energy of the oral care element 200 in the area where the contact element 240 is located, increase the amplitude, so that the contact element 240 can more effectively clean the tooth surface and gaps, and improve the cleaning effect.

[0035] Meanwhile, by embedding the counterweight 230 inside the other end of the brush head body, the counterweight 230 is prevented from being exposed, maintaining the integrity and aesthetics of the oral care element 200's appearance and avoiding the visual abruptness caused by external metal rings in related technologies; it also prevents the counterweight 230 from falling off, improving the product's durability and reliability, and avoiding the problem of loosening or falling off of external metal rings due to assembly gaps; in addition, it reduces the possibility of dirt accumulating in the gap between the counterweight 230 and the brush head body, meeting the high hygiene standards of oral cleaning products.

[0036] In some embodiments, the flushing body can be a single, integral unit, formed with the counterweight 230 using a die-casting process. When the contact element 240 is bristle, it can be directly fixed to the flushing body with or without copper bristle implantation. In this embodiment, the second outlet 215 can serve as the final outlet of the flushing body.

[0037] In some other embodiments, such as Figures 2 to 4As shown, the flushing body can be composed of multiple parts coupled together. Specifically, the flushing body may include a flushing handle 210 and a bristle attachment 220. The flushing handle 210 includes a connecting end 211 and a cleaning head 212, located at opposite ends of the flushing handle 210 extending along the output axis L1. The flushing handle 210 also has a first flow channel 213. The aforementioned second inlet 214 is located at the connecting end 211 and communicates with the first flow channel 213. The aforementioned second outlet 215 is located at the cleaning head 212 and communicates with the second inlet 214 through the first flow channel 213. For example, a connector 216 may be provided within the second inlet 214, allowing the flushing handle 210 to be inserted into the power output shaft 122 through the second inlet 214, and to be engaged with the outer wall of the power output shaft 122 via the inner wall surface of the connector 216, thereby ensuring the connection stability between the flushing handle 210 and the power output shaft 122. Meanwhile, the fluid discharged from the first outlet 1223 can enter the first flow channel 213 through the second inlet 214.

[0038] The tufting component 220 is disposed at one end of the cleaning head 212 at a predetermined angle to the extension direction of the output axis L1. For example, the tufting component 220 may be disposed at one end of the cleaning head 212 in a direction perpendicular to the output axis L1 (e.g. Figure 2 (As shown on the left end), at least a portion of a counterweight 230 is sandwiched between the bristle attachment 220 and the cleaning head 212, thereby fixing the counterweight 230 inside the rinsing body. Correspondingly, the aforementioned contact element 240 is provided on the bristle attachment 220, and the contact element 240 extends from the side of the bristle attachment 220 away from the counterweight 230. The bristle attachment 220 is also provided with a water outlet 221, which communicates with the second outlet 215, and the opening direction of the water outlet 221 is approximately the same as the extension direction of the contact element 240, so that the fluid discharged from the second outlet 215 can perform water flow impact through the water outlet 221 toward the extension direction of the contact element 240.

[0039] Of course, the bristle attachment 220 can also be set at the first end of the cleaning head 212 at a non-90° angle to the direction of extension of the output axis L1, or the brush head of the oral care element can be bent to adapt to the curvature of the teeth arrangement.

[0040] Regarding the specific arrangement of the counterweight 230 on the flushing body, this disclosure provides two feasible embodiments for reference.

[0041] Example 1: The fluid flowing from the second inlet 214 to the outlet 221 does not pass through the counterweight 230. That is, the counterweight 230 is designed to avoid the flow channel connecting the second inlet 214 and the outlet 221.

[0042] For example, the counterweight 230, the flow channel connecting the second inlet 214 and the outlet 221, and the tufting component 220 can be stacked in a direction perpendicular to the output axis L1. Of course, from a view perpendicular to the plane where the tufting component 220 is located, the flow channel connecting the second inlet 214 and the outlet 221 and the counterweight 230 can also be arranged side by side. For example, there are two counterweights 230, and the two counterweights 230 are located on both sides of the flow channel connecting the second inlet 214 and the outlet 221.

[0043] Example 2: The fluid flowing from the second inlet 214 to the outlet 221 flows through the counterweight 230. That is, the counterweight 230 forms part of the flow channel connecting the second inlet 214 and the outlet 221.

[0044] Specifically, the counterweight 230 has a second flow channel 231. Fluid from the axial channel 1221 flows through the first flow channel 213 and the second flow channel 231 to the outlet 221 and is sprayed out from the outlet 221 to perform a rinsing operation. In this way, the counterweight 230 does not need to avoid the flow channel connecting the second inlet 214 and the outlet 221. The counterweight 230 can cover the cleaning head 212 as much as possible. In other words, within the limited space of the cleaning head 212, there can be a relatively large space to accommodate a larger counterweight 230 to meet the counterweight requirements and improve the cleaning effect and vibration stability.

[0045] In some embodiments, the second flow channel 231 can be connected in series with the first flow channel 213 so that the fluid flowing from the second inlet 214 to the outlet 221 flows through the counterweight 230.

[0046] In some other embodiments, please refer again. Figure 2 As shown, the second flow channel 231 can be arranged downstream of the first flow channel 213, so that the fluid entering from the second inlet 214 flows out from the outlet 221 after passing through the first flow channel 213 and the second flow channel 231 in sequence.

[0047] For example, the second flow channel 231 may be a channel structure that is at least partially curved, so that the fluid flowing into the second outlet 215 is diverted through the second flow channel 231 and sprayed out through the outlet end 221 toward the extension direction of the contact element 240.

[0048] To facilitate the machining of the second flow channel 231, such as Figure 2 and Figure 5The second flow channel 231 may also include a first flow channel section 2311 and a second flow channel section 2312. The first flow channel section 2311 extends at least partially along the output axis L1. The second flow channel section 2312 is arranged at least partially at a preset angle with the first flow channel section 2311. The second outlet 215 passes through the first flow channel section 2311 and the second flow channel section 2312 in sequence and connects to the outlet end 221.

[0049] For example, the first flow channel section 2311 extends along the output axis L1, and the second flow channel section 2312 is arranged at a preset angle with the first flow channel section 2311. That is, the second flow channel 231 is connected by two channels at a preset angle. In this way, during processing, it is only necessary to process the two channels along a straight line and make the two channels connected. The processing operation is simple and convenient, reducing production costs.

[0050] In some embodiments, the axis of the first flow channel section 2311 can be substantially perpendicular to the axis of the second flow channel section 2312, i.e., the preset included angle can be a right angle. In this way, the second flow channel section 2312 can be perpendicular to the side of the counterweight block 230 adjacent to the bristle implant 220, further facilitating the processing operation of the second flow channel 231. At the same time, it can make the fluid spray out along the plane perpendicular to the bristle implant 220, further improving the oral cleaning effect.

[0051] To facilitate the flow of fluid from the first flow channel section 2311 into the second flow channel section 2312, in some embodiments, the second flow channel 231 may further include a transition section 2313. The first flow channel section 2311 can communicate with the second flow channel section 2312 through the transition section 2313. Furthermore, in a direction parallel to the axis of the first flow channel section 2311 and towards the second flow channel section 2312, the transition section 2313 partially extends beyond the second flow channel section 2312. Thus, when fluid enters the transition section 2313 from the first flow channel section 2311, some fluid will collide with the end of the transition section 2313 and return. Subsequent incoming fluid will exert a squeezing effect on these returning fluids, pushing them into the second flow channel section 2312, thereby improving the fluid flow efficiency, reducing fluid retention in the first and second flow channel sections 2311, and enhancing the flow efficiency of fluid flowing from the first flow channel section 2311 into the second flow channel section 2312.

[0052] Furthermore, such as Figure 5 and Figure 6 As shown, the cross-section of the counterweight 230 along the reference plane (e.g.) Figure 5As shown in the cross section), the side of the transition section 2313 away from the second flow channel section 2312 is at least partially inclined towards the second flow channel section 2312 with a preset inclination angle α. This helps guide the fluid to transition as smoothly as possible from the first flow channel section 2311 to the second flow channel section 2312, reducing energy loss during fluid flow and avoiding turbulence or eddies caused by abrupt changes in cross section. This further improves the flow efficiency of the fluid flowing from the first flow channel section 2311 into the second flow channel section 2312, thereby increasing the water flow impact force of the oral care appliance on the oral cavity and improving oral cleaning effect. The reference plane is the plane passing through the centerline of the second flow channel 231 and the axis of the internal flow channel of the outlet end 221. When the second flow channel 231 is a straight channel, the centerline of the second flow channel 231 can be understood as the axis of the second flow channel 231. When the second flow channel 231 is a curved channel, the centerline of the second flow channel 231 can be understood as the line connecting the midpoints of each cross section of the second flow channel 231.

[0053] Optionally, the side of the transition section 2313 away from the second flow channel section 2312 can be an inclined surface; the side of the transition section 2313 away from the second flow channel section 2312 can also be an inclined curved surface, such as an arc surface; or, the portion of the transition section 2313 away from the second flow channel section 2312 can be an arc surface. All these methods can reduce fluid flow resistance. The preset inclination angle α is in the range of 30°-60°, preferably in the range of 40°-50°, further reducing fluid kinetic energy loss and improving the flow efficiency of fluid flowing from the first flow channel section 2311 into the second flow channel section 2312.

[0054] In some embodiments, see again Figure 2 As shown, both the first flow channel section 2311 and the first flow passage 213 extend along the output axis L1. That is, the main extension direction of the first flow channel section 2311 is the same as the main extension direction of the first flow passage 213. In this way, the fluid can flow from the first flow passage 213 to the first flow channel section 2311 in the same direction, reducing the kinetic energy loss caused by fluid reversal, further improving fluid flow efficiency, and increasing the water flow impact force of the oral care device.

[0055] Furthermore, the first flow channel section 2311 and the first flow passage 213 are located on the same straight line, so that the fluid can flow directly from the first flow passage 213 into the first flow channel section 2311, further reducing the kinetic energy loss of the fluid flow.

[0056] To further reduce the kinetic energy loss of the fluid in the first flow channel 213 and the first flow section 2311, such as Figure 2 and Figure 3As shown, the first flow channel 213 can be at least partially converged towards the first flow channel section 2311, so that the inner wall surface of the first flow channel 213 smoothly contacts the inner wall surface of the first flow channel section 2311. This allows the fluid to flow smoothly into the first flow channel section 2311 under the guidance of the inner wall surface of the first flow channel 213, effectively reducing abrupt changes in cross-section during fluid flow. This ensures a uniform velocity distribution of the fluid in the transition region from the first flow channel 213 to the first flow channel section 2311, avoiding excessively high or low local velocities, reducing turbulence and energy loss, and thus improving fluid flow efficiency.

[0057] In some embodiments, the counterweight 230 is symmetrically arranged about the aforementioned reference surface. This allows the inertial force generated by the oral care element 200 during reciprocating vibration relative to the reference surface to be evenly distributed on both sides of the reference surface. This ensures that the oral care element 200 remains balanced and stable during reciprocating vibration, preventing disorder and reducing additional vibration. This ensures that the contact element 240 is evenly stressed on the tooth surface, avoiding cleaning dead zones caused by uneven vibration and improving cleaning effectiveness. Simultaneously, the symmetrical arrangement of the counterweight 230 also reduces uneven load on the drive assembly 120, decreasing additional wear on the drive assembly 120. This helps extend the overall lifespan of the oral care appliance and reduce the failure rate.

[0058] Furthermore, when performing fluid rinsing and reciprocating vibration brushing operations simultaneously, since the reference surface also includes the centerline of the second flow channel 231, meaning that the path through which the fluid flows is also located on the reference surface, the influence of the fluid flowing through the counterweight 230 on the uniform distribution of the inertial force generated by the counterweight 230 during the vibration of the oral care element 200 is reduced. In addition, the axis of the internal flow channel of the water outlet 221 is also located on the reference surface, which also ensures that the energy generated by the liquid jet and the reciprocating vibration will not cause significant motion interference between them, reducing the influence of the uniform distribution of the inertial force generated during the vibration of the oral care element 200, thereby further enhancing the above-mentioned effects.

[0059] For example, the counterweight 230 at least at one end away from the bristle implant 220 gradually tapers in a direction away from the bristle implant 220, or in other words, the side of the counterweight 230 away from the bristle implant 220 forms a raised ridge shape. This allows the back of the head of the oral care element 200 to form a curved line shape, improving the aesthetics of the oral care element 200, while also making the back of the head of the oral care element 200 smoother, adaptable to the shape of the oral cavity wall, and improving the user experience.

[0060] In some embodiments, such as Figure 7 and Figure 8As shown, the counterweight 230 has two through holes 233 in its middle. These through holes 233 penetrate both the side of the counterweight 230 adjacent to the bristle-forming member 220 and the side facing away from the bristle-forming member 220. Thus, when the brush handle 210 is coupled to the counterweight 230, the brush handle 210 can partially enter the two through holes 233 from the side of the counterweight 230 facing away from the bristle-forming member 220, increasing the contact area between the brush handle 210 and the counterweight 230 and ensuring the stability of the counterweight 230. In particular, when the brush handle 210 and the counterweight 230 are formed as a single unit using a die-casting technique, the fixing structure of the front mold can fix the counterweight 230 in the corresponding position on the front mold by inserting it into the through holes 233 on the side of the counterweight 230 adjacent to the bristle-forming member 220, ensuring the accuracy of the coupling position between the brush handle 210 and the counterweight 230. Meanwhile, the two through holes 233 are symmetrically arranged about the reference plane, which can avoid affecting the left-right balance of the counterweight 230 due to the openings.

[0061] Optionally, the two through holes 233 can be either smooth holes or stepped holes. Preferably, the through holes 233 are stepped holes, and the larger opening of the through holes 233 faces the side adjacent to the tufting part 220, thereby facilitating the insertion of the fixing structure of the mold front mold into the through holes 233.

[0062] Of course, the through hole 233 can also be composed of two non-interconnected blind holes, which can also achieve the function of fixing with the fixing structure of the mold front mold, and the flushing handle 210 can partially enter the two through holes 233 from the side of the counterweight block 230 away from the tufting part 220, thereby increasing the contact area between the flushing handle 210 and the counterweight block 230 and ensuring the fixing stability of the counterweight block 230. The depth of the blind hole on the side of the counterweight block 230 away from the tufting part 220 is about 1mm.

[0063] In some embodiments, the counterweight 230 has a connecting hole 234 at the end away from the second outlet 215. The connecting hole 234 penetrates at least through the side of the counterweight 230 opposite to the bristle implant 220, thereby reducing the upper weight of the counterweight 230, balancing the upper and lower weight of the counterweight 230, and improving the vibration stability of the oral care element 200. Furthermore, when the brush handle 210 is coupled to the counterweight 230, the brush handle 210 can partially enter the connecting hole 234 from the side of the counterweight 230 opposite to the bristle implant 220, increasing the contact area between the brush handle 210 and the counterweight 230 and ensuring the fixed stability of the counterweight 230. Simultaneously, the connecting hole 234 is symmetrical based on a reference plane, which avoids affecting the left-right balance of the counterweight 230 due to the opening.

[0064] Furthermore, a stepped groove 235 is provided on the outer periphery of the side of the counterweight 230 adjacent to the bristle attachment 220. When the brush handle 210 is coupled to the counterweight 230, the brush handle 210 can extend into the stepped groove 235 to improve the connection stability between the counterweight 230 and the brush handle 210. For example, the stepped groove 235 can be arranged around the counterweight 230, or two stepped grooves 235 can be arranged symmetrically about the reference surface.

[0065] Considering that the fluid needs to flow through the counterweight 230, in some embodiments, the counterweight 230 can be made of a rust-free material to avoid corrosion of the counterweight 230 and its impact on the quality of the effluent. Furthermore, a smooth flow channel surface reduces flow resistance and increases impact force. For example, the counterweight 230 can be made of stainless steel, ceramic, etc.

[0066] To meet the counterweight requirements, the weight of the counterweight 230 can range from 2g to 3g. Preferably, the weight of the counterweight 230 is 2.3g.

[0067] Regarding the specific structure of the water outlet 221, in some embodiments, the water outlet 221 can be constructed as a hole structure, that is, the water outlet 221 does not extend from the side of the bristle 220 away from the counterweight 230, so that the fluid flowing out of the second flow channel section 2312 can be sprayed out through the water outlet 221.

[0068] In some other embodiments, the water outlet 221 can also be configured as a ring structure, extending from the side of the bristle implant 220 away from the counterweight 230. Correspondingly, the side of the counterweight 230 adjacent to the bristle implant 220 is provided with a protrusion 232, which surrounds the portion forming the second flow channel section 2312. The water outlet 221 is fitted onto the protrusion 232, and the inner wall surface of the water outlet 221 is sealed to the outer wall surface of the protrusion 232, so that the fluid flowing out of the second flow channel section 2312 can be sprayed out through the water outlet 221. Furthermore, since the water outlet 221 protrudes from the side of the bristle implant 220 away from the counterweight 230, during oral cleaning, the water outlet 221 can be brought closer to the inner wall of the oral cavity, which can increase the water flow impact force and enhance the oral cleaning effect.

[0069] For example, a sealing ring can be fitted on the outer wall surface of the protrusion 232. When the water outlet 221 is fitted on the protrusion 232, the inner wall surface of the water outlet 221 can be press-fitted with the seal to ensure the sealing effect.

[0070] In some embodiments, the flushing handle 210 and the counterweight 230 can be integrally formed by a die-cutting process, thereby making the counterweight 230 and the flushing handle 210 more tightly connected. When the drive assembly 120 drives the oral care element 200 to vibrate, the counterweight 230 can vibrate together with the flushing handle 210, avoiding relative swaying between the flushing handle 210 and the counterweight 230, thus reducing additional power loss and noise, and improving the user experience. At the same time, it can also avoid unnecessary assembly operations, have better airtightness, and reduce production costs. It should be noted that the aforementioned connector 216 can be formed together in this die-cutting process; the connector 216 can also be formed separately, and then the connector 216 is assembled into the second inlet 214 of the flushing handle 210 formed by this die-cutting process.

[0071] For example, during the injection molding process, the injection port can be located on the side of the counterweight 230 facing away from the flocked part 220, thereby achieving the purpose of hiding the injection port and improving the aesthetics.

[0072] After the flushing handle 210 and the counterweight 230 are injection molded, as Figure 2 and Figure 3 As shown, the cleaning head 212 of the flushing handle 210 may have a bottom wall 2121 and side walls 2122 circumferentially disposed on the bottom wall 2121, with the bottom wall 2121 and side walls 2122 forming a mounting groove. Correspondingly, a second outlet 215 is formed on the side wall 2122, and a counterweight 230 is received within the mounting groove. Exemplarily, the middle portion of the bottom wall 2121 may arch away from the bristle attachment 220 and smoothly transition with the side wall 2122, thereby avoiding sharp edges and improving user comfort.

[0073] In some embodiments, the counterweight 230 may be flush with the opening of the mounting slot, or the counterweight 230 may protrude from the opening of the mounting slot.

[0074] In some other embodiments, such as Figure 2 As shown, the counterweight 230 is embedded in the mounting groove and is a certain distance from the opening of the mounting groove. In this way, when installing the bristle insert 220, the bristle insert 220 can be at least partially accommodated in the mounting groove, and the bristle insert 220, the flushing handle 210, and the counterweight 230 are ultrasonically welded together to form an integral assembly, thereby increasing the connection area between the bristle insert 220 and the flushing handle 210 and improving the connection reliability.

[0075] In some embodiments, such as Figure 2 , Figure 9 and Figure 10As shown, the main body of the rinse also includes a soft rubber component 250, which at least partially covers the outer surfaces of the bristle implant 220 and the rinse handle 210. Thus, during oral cleaning, it is equivalent to having a soft rubber structure between the outer surfaces of the bristle implant 220 and the rinse handle 210 and the inner wall of the mouth, making the outer surface of the rinse body softer, reducing irritation to the mouth, and improving the user experience. Simultaneously, the soft rubber component 250 also serves as a connection between the bristle implant 220 and the rinse handle 210, further improving the connection stability between them.

[0076] For example, the soft rubber part 250 can be coated onto the outer surface of the integral formed by the bristle implant 220 and the brush handle 210 through an injection molding process. The outer surface of the soft rubber part 250 may also have several clearance slots 251 spaced apart along the output axis L1. In other words, from the overall perspective of the oral care element 200, the outer surface of the oral care element 200 has several clearance slots 251 on both sides, allowing the outer surface of the oral care element 200 to conform to the shape of the oral cavity, thus improving the user experience.

[0077] According to another aspect of this disclosure, an oral care element, such as... Figure 2 , Figure 4 , Figure 9 and Figure 10 As shown, the oral care element includes a brush handle 210, a bristle implant 220, and a counterweight 230. The brush handle 210, extending along the main extension line L2, has a connecting end 211 and a cleaning head 212, located at opposite ends of the brush handle 210 along the main extension line L2. The brush handle 210 has a first flow channel 213, with a second inlet 214 formed at the connecting end 211 and a second outlet 215 formed at the cleaning head 212. The bristle implant 220 is disposed along the cleaning head 212 along the main extension line L2. At one end of line L2 extending at a preset angle, the bristle implant 220 is provided with a contact element 240 and a water outlet 221, and the contact element 240 extends from the side of the bristle implant 220 away from the cleaning head 212; the counterweight 230 is at least partially sandwiched between the cleaning head 212 and the bristle implant 220, and the counterweight 230 is provided with a second flow channel 231, through which fluid from the second inlet 214 sequentially passes through the first flow channel 213, the second outlet 215 and the second flow channel 231 and is sprayed out from the water outlet 221.

[0078] Furthermore, the flushing handle 210 is integrated with the counterweight through a mold sleeve process.

[0079] It should be noted that when the oral care element 200 is inserted into the power output shaft 122 of the grip 100, the output shaft L1 is parallel to or coincides with the main extension line L2. For the specific structures of the flushing handle 210, the bristle implant 220, and the counterweight 230, please refer to the detailed descriptions in the above embodiments; they will not be repeated here.

[0080] The terms "upper" and "lower" used in this disclosure are used to describe the relative positional relationship of the various structures in the accompanying drawings. They are only for the purpose of clarity of description and are not intended to limit the scope of implementation of this disclosure. Changes or adjustments to the relative relationships without substantially altering the technical content should also be considered as part of the scope of implementation of this disclosure.

[0081] It should be noted that, in this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0082] Furthermore, in this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure.

Claims

1. An oral care appliance, characterized in that, The oral care appliance includes a grip and oral care elements, wherein... The gripping part includes a housing for gripping and a drive assembly disposed inside the housing. The drive assembly has a drive body and a power output shaft. The drive body has an output axis extending along the power output direction. The power output shaft extends along the output axis and passes through the drive body. The power output shaft has an axial channel extending along the output axis and a first inlet and a first outlet communicating with the axial channel. The oral care element includes: A flushing handle has a connecting end and a cleaning head, the connecting end and the cleaning head being located at opposite ends of the flushing handle extending along the output axis. The flushing handle has a first flow channel, and the first flow channel forms a second inlet at the connecting end, the second inlet communicating with the first outlet, and the first flow channel forming a second outlet at the cleaning head. A bristle-embedded component is disposed at one end of the cleaning head at a preset angle to the direction of extension of the output axis. The bristle-embedded component is provided with a contact element and a water outlet end, and the contact element extends from the side of the bristle-embedded component away from the cleaning head. A counterweight, at least partially sandwiched between the cleaning head and the bristle implant, is provided with a second flow channel, through which fluid from the axial channel is ejected from the water outlet through the first flow channel and the second flow channel.

2. The oral care implement of claim 1, wherein, The plane passing through the centerline of the second flow channel and the axis of the internal flow channel at the outlet end is used as the reference plane, and the counterweight is symmetrically arranged about the reference plane.

3. The oral care implement of claim 2, wherein, The counterweight gradually contracts at least at one end away from the hair grafting component in a direction away from the hair grafting component.

4. The oral care implement of claim 1, wherein, The second flow channel is connected in series with the first flow channel.

5. The oral care implement of claim 1, wherein, The second flow channel is located downstream of the first flow channel.

6. The oral care implement of claim 5, wherein, The second flow channel includes a first flow channel section and a second flow channel section, wherein, The first flow channel section extends at least partially along the extension direction of the output axis, the second flow channel section is arranged at least partially at a preset angle to the extension direction of the output axis, and the second outlet passes through the first flow channel section and the second flow channel section in sequence to connect with the water outlet end.

7. The oral care implement of claim 6, wherein, The preset included angle is a right angle, and the first flow channel section is connected to the second flow channel section through a transition section; Along a direction parallel to the axis of the first flow channel segment and toward the second flow channel segment, the transition section extends beyond the second flow channel segment.

8. The oral care implement of claim 7, wherein, The transition section is at least partially curved on the side away from the second flow channel.

9. The oral care implement of claim 7, wherein, The plane passing through the centerline of the second flow channel and the axis of the internal flow channel at the outlet end is used as the reference plane; Viewed from the cross-section of the counterweight along the reference plane, the side of the transition section away from the second flow channel section is at least partially inclined toward the direction of the second flow channel section and has a preset inclination angle.

10. The oral care implement of claim 9, wherein, The preset tilt angle ranges from 30° to 60°.

11. The oral care implement of claim 6, wherein, The first flow channel segment and the first flow passage are located on the same straight line; and / or, The first flow channel is at least partially converged toward the first flow channel section so that the inner wall surface of the first flow channel is smoothly connected to the inner wall surface of the first flow channel section.

12. The oral care implement of claim 2, wherein, The counterweight has two through holes in its center, each through the side of the counterweight adjacent to the tufting member and the side opposite to the tufting member, and the two through holes are symmetrically arranged about the reference surface; and / or, The counterweight has a connecting hole at one end away from the second outlet. The connecting hole penetrates at least through the side of the counterweight opposite to the tufting member, and the connecting hole is symmetrical about the reference plane; and / or, The counterweight is made of stainless steel; and / or, The counterweight has a mass range of 2g-3g; and / or, The counterweight has a stepped groove on the outer periphery of the side adjacent to the hair-planting component.

13. The oral care implement of claim 1, wherein, The counterweight has a protrusion on the side adjacent to the flocking component, and the protrusion surrounds the portion forming the second flow channel section; The water outlet is fitted onto the protrusion, and the inner wall of the water outlet is sealed to the outer wall of the protrusion.

14. The oral care implement according to any one of claims 1 to 13 wherein, The flushing handle and the counterweight are formed into one piece by a die-casting process.

15. The oral care implement of claim 14, wherein, The cleaning head has a bottom wall and side walls surrounding the bottom wall, the bottom wall and side walls forming a mounting groove, and the second outlet is opened on the side wall and communicates with the mounting groove; The counterweight is housed within the mounting slot.

16. The oral care implement of claim 15, wherein, The bristle implant is at least partially housed within the mounting groove, and the bristle implant is integrally ultrasonically welded to the flushing handle and the counterweight. The oral care element also includes a soft rubber component that at least partially covers the outer surfaces of the bristle implant and the brush handle.

17. An oral care implement characterized by, The oral care appliance includes a grip and oral care elements, wherein... The gripping part includes a housing for gripping and a drive assembly disposed inside the housing. The drive assembly has a drive body and a power output shaft. The drive body has an output axis extending along the power output direction. The power output shaft extends along the output axis and passes through the drive body. The power output shaft has an axial channel extending along the output axis and a first inlet and a first outlet communicating with the axial channel. The oral care element includes: The flushing body has a second inlet at one end extending along the output axis, which is used to communicate with the first inlet. The other end of the flushing body extending along the output axis has a contact element and a second outlet communicating with the second inlet. A counterweight is located inside the other end of the flushing body along the output axis.

18. The oral care implement of claim 17, wherein, The flushing body includes: A flushing handle has a connecting end and a cleaning head, the connecting end and the cleaning head being located at opposite ends of the flushing handle extending along the output axis. The flushing handle also has a first flow channel, a second inlet being located at the connecting end and communicating with the first flow channel, and a second outlet being located at the cleaning head and communicating with the second inlet through the first flow channel. A tufting component is disposed at one end of the cleaning head at a preset angle to the direction of extension of the output axis, and the counterweight is clamped between the cleaning head and the tufting component. A contact element is disposed on the tufting component and extends from the side of the tufting component away from the counterweight. The tufting component is also provided with a water outlet end, which is connected to the second outlet.

19. The oral care implement of claim 18, wherein, The fluid flowing from the second inlet to the outlet does not pass through the counterweight.

20. An oral care element characterized by, The oral care element includes: A flushing handle extending along a main extension line has a connecting end and a cleaning head, the connecting end and the cleaning head being located at opposite ends of the flushing handle along the main extension line, the flushing handle having a first flow channel, and the first flow channel forming a second inlet at the connecting end and a second outlet at the cleaning head; A bristle-embedded component is disposed at one end of the cleaning head at a preset angle to the direction of extension of the main extension line. The bristle-embedded component is provided with a contact element and a water outlet end, and the contact element extends from the side of the bristle-embedded component away from the cleaning head. A counterweight is at least partially sandwiched between the cleaning head and the bristle implant. The counterweight has a second flow channel, and fluid from the second inlet is sequentially ejected from the water outlet through the first flow channel, the second outlet, and the second flow channel.

21. The oral care implement of claim 20, wherein, The flushing handle is integrally formed with the counterweight through a die-casting process.

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